Sonic solutions pxhlpa64.sys not digitally signed driver and plextor dvdr does not work in win 7-64.

I read everything I can find on this problem. I don't have any roxio software on my machine and this driver is associated with the roxio software. This problem just started a week ago. the only program I have installed is corel photo album 6. I uninstalled the driver and then win7 reinstalls on reboot with the same problem. This is associated with a recent windows update? is there a registry fix? WTF?

Kent...

Hello

The updates that you have installed?

We are not sure what could have caused this problem. You can try to remove the affected filter drivers and check. This helped little.

To do this, follow these steps:

1. Click Start, type regedit in the search box, and then click regedit in the list programs.

If you are prompted for an administrator password or a confirmation, type your password, or click on continue.

2. Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\ {4D36E965-E325-11CE-BFC1-08002BE10318}

Warning There may be many instances of the registry subkey that is mentioned in step 2. You must ensure that you are in the appropriate registry subkey before modifying the UpperFilters and LowerFilters values. To verify that you are in the appropriate registry subkey, make sure that the default data value is the CD-ROM/DVD-ROM and the class data value is CDROM.

3. in the right pane, click UpperFilters, and then click on remove.
4. click on Yes to confirm the deletion of the UpperFilters registry entry.
5. in the right pane, click LowerFilters, and then click on remove.
6. click on Yes to confirm the deletion of the LowerFilters registry entry.
7. exit the registry editor and then restart the computer.

Note After the removal of the UpperFilters registry entry and the LowerFilters registry entry, you may lose functionality in certain programs such as CD recording programs. In this scenario, you must reinstall all of the programs involved.

See the Windows updates are installed
http://Windows.Microsoft.com/en-us/Windows7/see-which-Windows-updates-are-installed

Thanks and greetings
Umesh P - Microsoft technical support.

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Tags: Windows

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